[Ref Daddy]

4.43.5 SITUATION A: Is it traveling if A1 falls to the floor: (a) while holding the ball; or (b) after being airborne to catch a pass or control a rebound? RULING: Yes in both (a) and (b).
4.43.5 SITUATION B: A1 dives for a loose ball and slides after gaining control. A1 is in a position either on his/her back or stomach. What can A1 do without violating? RULING: A1 may pass, shoot, start a dribble or call a time-out. Once A1 has the ball and is no longer sliding, he/she may not roll over. If flat on his/her back, A1 may sit up without violating. Any attempt to get to the feet is traveling unless A1 is dribbling. It is also traveling if A1 puts the ball on the floor, then rises and is first to touch the ball.

4.43.5 SITUATION C: A1 is dribbling when he/she: (a) drops to a position with a knee on the floor and then ends the dribble; or (b) drops one knee to the floor and then stands again while continuing the dribble. RULING: The action in both (a) and (b) is legal. However, if A1 touches a knee to the floor while holding the ball, it would be traveling as A1 has touched the floor with something other than a hand or foot.
4.43.5 SITUATION D: A1 secures possession of the ball with one knee in contact with the floor. May A1 assume a standing position without committing a traveling violation? RULING: It depends on what A1 does. If A1 attempts to stand up while holding the ball, a traveling violation occurs. However, if A1 starts a dribble and then rises, no violation has occurred. Also, A1 could pass, try for goal or call a time-out from that position.